Fibula

Question 1

Head

Answer 1

the swollen proximal end of the fibular, more massive and less meidolaterally flattened than the distal end

Question 2

Styloid process

Answer 2

is the most proximal projection of the bone, forming the posterior part of the head

Question 3

Proximal fibular articular surface

Answer 3

is a round, flat, medially orientated surface that corresponds to a similar surface on the lateral proximal tibia

Question 4

Fibula shaft

Answer 4

long, thin, fairly straight segment of the bone between the expanded proximal and distal ends

Question 5

Interosseous crest

Answer 5

is the elevated crest that runs down the medial, slightly anteriorly facing surface of the shaft

Question 6

Nutrient foramen

Answer 6

opens proximally on the posteromedial surface, about midshaft level

Question 7

Lateral malleolus

Answer 7

the inferior most projection of the fibula

its lateral, nonarticular surface is subcutaneous (close to the muscle) forming the lateral knob of the ankle

Question 8

Malleolar (distal) articular surface

Answer 8

is a flat, medially facing, triangular surface whose apex faces inferiorly
the surface articulates with the lateral surface of the talus

Question 9

Malleolar fossa

Answer 9

located just posterior to the distal articular surface

Question 10

Fibular (peroneal) groove

Answer 10

for tendons of the fibularis longus and fibularis brevis muscles, marks the posterior surface of the distal fibula

Question 11

Siding: intact fibula

Answer 11

the articular surfaces for the tibia are medial, the head is proximal, the flattened end is distal and the malleolar fossa is posterior

Question 12

Siding: proximal end

Answer 12

the styloid process is lateral, proximal and displaced posteriorly
the articular surface faces medially and is also displaced posteriorly
the neck is roughest laterally

Question 13

Siding: shaft

Answer 13

nutrient foramen opens proximally
the sharpest crest on the triangular proximal end is the interosseous crest
this expands downshaft to a rough, flattened surface
the distal aspect of the shaft is marked by a line diverging form the trend of the interosseous crest in the direction of the side from which the bone comes

Question 14

Siding: distal end

Answer 14

the malleolar fossa is always posterior and the articular facet is always medial with its apex pointed inferiorly